For the headlight: Yes if find that it does aim rather low. If you can't see then turn on your high beam and it should help, but I find it to be a bit dark even then. You can adjust the headlight angle with a wrench using the bolt on the left hand side of the bike (I think left IIRC) The combo of low and high puts out decent light but I've been thinking of getting HID in the high beam projector for lots of extra light. However, I've been warned not use your flash-to-pass because that kind of setup doesn't take well to the repeated on-off cycles. The adjusting screw move both high and low beams, I do wish that the beams had some overlap.
Throttle: I wouldn't call the throttle snatchy, but there is unavoidable issue of all the play in the drive line that comes with shaft drive. If you've rolled off the gas and then give it gas again without being very gentle, you'll get lash as the whole systems goes from negative to positive stress on the driveline. You can avoid this by using the clutch to re-engage the driveline softly. Otherwise I don't see the throttle as being snatchy. That said, I don't find the throttle on the big breva to be smooth, not when compared to say an Indian Scout which is smooth as silk from nearly 0 revs. In my experience, the B11 does not like to be ridden under 15 mph. Try cleaning your throttle bodies and see if there some buildup causing them to stick? The right one has that problem where it leaks oil out the bottom and if it's sat for a long time that could have turned to some nice varnish.